Electronics Forum | Wed May 12 11:55:08 EDT 2010 | pbarton
We are using VPS, but only for high mass assemblies. As the other respondent has suggested if the mass of the assemblies is very low then difficult to control temp. rise times to within the normally accepted parameters. The Rehm equipment does seem
Electronics Forum | Fri Feb 17 12:22:50 EST 2012 | joeln
I am planning a PCB design for automated assembly of all components, SMT. I have been told that the industry standard used at the assembly house is something called "88", and that the assembly house can do better "55" or even "44". I’m not sure if
Electronics Forum | Mon Aug 27 08:08:20 EDT 2012 | rgduval
An ICT solution seems to be overkill for what you've described. What kind of volumes are you hand building? How many components are not marked? What is your current yield with the process you are using? What is/was your yield prior to implementing m
Electronics Forum | Mon Aug 20 04:08:12 EDT 2018 | pcbcart
Most PCB Assembly Houses offers free wide-range DFA before the production run to ensure the design is capable for manufacturing. Actually, for pcb designers, it's recommended to be aware of the concepts of Design for Manufacture and Assembly of PCBs
Electronics Forum | Wed Nov 21 09:19:09 EST 2007 | Paul M.
Need some opinions from you fine folks. We are building assemblies 90% SMT, 10% TH. Fine pitch and BGA devices, etc. The customer is complaining about cold solder joints (SMT) after about 1 year of use, scattered thru-out the assembly, not consistan
Electronics Forum | Thu Oct 05 13:24:42 EDT 2023 | rgduval
So, a couple of things... First, you're asking about water washing a part, but, note that the manufacturer says to NOT ultrasonically clean their microphones. Those can be two different cleaning types...assembly shops using water wash may not be us
Electronics Forum | Tue Mar 25 09:08:13 EST 2003 | davef
Rework and repair methods are: * 7721 - Repair & Modification of Printed Boards & Electronic Assemblies * 7711 - Rework of Electronic Assemblies There are no standards regarding: * Repair and rework of electronic assemblies. * Reclaiming component
Electronics Forum | Wed Nov 15 09:36:27 EST 2006 | Board House
Hi AJ, The biggest mistake in the industry today is documentation for lead free assembly required product. We are still seeing prints coming in saying Lead Free / High TG FR4. When in reality standard FR4 170 Tg. material is considered High Tg. and L
Electronics Forum | Mon Sep 08 11:53:15 EDT 2008 | aqueous
Here are links to articles on that subject: Can You Clean a No-Clean Assembly? http://www.residues.com/pdfs/Circuits%20Assembly%20Articles/2003/low%20res/2003.01-Can%20You%20Clean%20a%20No-Clean%20Assembly%20-%20Circuits%20Assembly.pdf Component
Electronics Forum | Thu Jun 11 10:02:36 EDT 2009 | dyoungquist
Our cleaning process involves the assemblies being completely immersed in the water bath of the ultrasonic cleaner. The assembly has a QFP44 on it. Customer stated that when these assemblies have been cleaned with water in the past (at a different
